Clamp for the frames of eyeglasses.



EL A. MG'JANEL.

CLAMP F03 THE FRAMES o? BYEGLASSES.

APPLIG'ATXGE 'FILED NOV.Z7,190B.

-jggfgih Patented June 15, 1909 ATT "V5 HARRY A. MCDANIEL, OF LEBANON, INDIANA.

GLMLP FR Tm FRAMES OF EYEGLASSES.

Specification of Letters Patent.

Patented .Tune 15, 1909.

Application led November 27, 1908. Serial No. 464,736.

To all whom it may concern:

Be it known that HARRY A. MCDANIEL, a citizen of the United States, residing at Lebanom/inthe county of Boone and State of Indiana, have invented certain new and useful Improvements in Clamps for the Frames of Eyeglasses, of which the following is a specilication.

T his invention relates to a clamping device for the frames of eye glasses; and the object of the invention is to provide clamping devices of the above character which are constructed to prevent loss ot the tension of the springs, for holding the guards in position upon Athe frame, by the elimination of the frictional contact points.

A further object of the invention is the provision of clamping devices which will be neat in appearance, so as not to mar the appearance of the eye-glass frame, which must necessarilybe a delicatestructure, and will require but little space for installation upon said frames and thereby'eliminates the necessity for reducing the length of the arches of said frames.

I'att-ain the several objects of the invcn tion by means of theframe and clamping devices illustrated in: the accompanying drawings, forming a part hereof, in Whichl Figure l is a fragmentary detail perspective view of an eye glass :trame showing the clamping devices ino erating position. Fig. 2 is a fragmentary letail plan view of one of said clamping devices. Fig. i), is a cross section on the line 3-3 in Fig. 2. Fig. 4 is an underside plan viev.7 of the construction shown in Fig. 2. Fig. 5 is ay fragmentary detail viewA on the dotted line in Fig. 2. F ig. 6 is a detail perspective view of a modilied construction of the combined pivot-lever and spring. Fig. 7 is a perspective view of the combined pivot-lever and spring disconnected from the main frame In the drawings, 20 constitutes the arched portion of the frame which extends across the bridge of the nose, and the ends ofvsaid arch terminate in the usual and Well known horizontally disposed flat portions which are bifurcated to form the ears 21, adapted' to receive the lenses 22; these lenses being secured within said ears by means ot the clamping screws 23. Integrally formed at the root of the ears 21 are the extensions 26 which bear against the adjacent edge of the brace for the latter. The horizontally disposed portions of the arch 20 are provided with the apertures 2 (see Fig. 4) and the upper ends of the extensions 26 are provided with the lugs 28, having recesses 29 Which stand in vertical alincinent with the apertures 27. Inserted in the apertures 2T and the recesses 29 are the pivot-pins 30, which carry the horizontally extending guard levers 3l. By this construction the guard levers 3l, springs 45 and guards 32 may be detached :t'rom the trame. These guard levers form a bearing for the nose guards or clamps 32, which are pivotally connected to the levers 51 at 83, thereby permitting them to automatically seat themselves against the sides of the nose when the eyeglasses are placed into position. The inner ends of the guard levers 31 have right angle bends 34 to forni seats for the guards 32 by means of the integrally formed ears 35. The guard levers 3l have a second right angle bend 38, which stands in a plane parallel to that of the main bodies of said levers 3l. These bends form stops for the rear ends of the ears 35, whereby the guards 32 are prevented from dropping into a horizontal position.

The forward ends of the guard levers 31 forni handles whereby the levers may be pressed toward each other, thus moving the opposite ends, carrying the guards 32, in a reverse direction, causing said levers to be spread apart to permit the eyeglasses to be placed into position upon the nose. As the ends ol the guard levers 31 are released', the opposite ends of said levers, carrying the guards 32,

.the pivots 50.

As before stated, when the forward ends vof the guard levers 31 are pressed toward are forced toward each other, under the action ot the springs 45. They each other the opposite ends of saidvlevers are separated andin moving travel' through an are caused by the pivotal mounting of said levers. This travel of the guard levers causes a slight change in position of the projecting ends 48 of the springs-45 relative to the contact posts by means of which the Cfi larch 20 and to one side oi `die pivots 27 upon which the guard levers 3l are mounted. The pivots comprise small crank shaped wires extending downwardly from the lower sides of the horizontal portions of the arch 20 to secure a swinging movement of the contact points between these pivots 50 and the projecting ends 4S of the springs. The pivots 50 are bent as shown in FiO'. 5 of the drawings. Examining- Fig. 4 of the drawings, which is an under side plan view, it will be, noted that moving the outer end of the gue-rd lever 8l in the direction of the arrow toward A, wili cause the Opposite end of said lever, carrying` the guard 32,@ travel in the opposite direction, indicated by the arrow toward B. lf the projecting; 3nd i8 of theI spring were to drag` vthrough a fixed guide on the frame, to compensate 'for the swinging movement of the ,guard levers 3l, friction would result. Friction is climi nated by forming the hooks 52 on the ends 48 ot the springs 45, which hooks engage the crank portions of the pivots 50 to pre-:ent separation of the parts when the guard levers 3l are moved.

Figs. G and are views of modilied nstruction in which the lever 3l and Lne attuatinp` springy are formed ont of a single piece of material, and by means of which the same result, as above mentioned, is obtainable.

Having lthus uily described my said iiivention, what I dasiie to securc by Latters Patent of the United States, 1s-

1. In an eyeglass, the frame a pair of guard levers pivctaily mounted thereon, springs adapted to apply tension to said levers, and movable pivots on said frame adapted to orn. hearings for t' e free eiis of said springs.

2. In an eyeglass, the frame, pair of guard .levers pivotally mount l thereon, springs adapted to apply tens )r to said levers, movable pivots on said rz me adapt/ed to form hearings for the fri-e ends of said springs, and means to prevent accidi-ntal separation olf the spring' and pivots.

In an eyegvass, thc frame, a pair of guard levers pivoilalliv niourted on said frame, guards pi'fotally mourtcd Lin said levers, stopaiie' iss on said lewis ti limit the moven'icnt of said guards, springs adapted to apply tension to said lever and movable pivots on said frame adapted u form bear-` ings for the 'ree ends of said springs.

4s ln an ey ass, the fram@ a pur of guard levers p votally mounted 011 said frame, springs adapted to apply tension to .said levers, anzinio able crank-sli; pcd pivots on said frime ad ptct to forni bearings :tor

exids of saiff springs.

eyeglass, the frame, a pair of 'ers pivotally inounied on said i ns fer letachably mounting said levers on said f ame, spriifgs vaiflf-ipted to `apply tension to said levers, and niowbie,

pivots on said frame adapted to form beariilhs for the free ends 'if said springs.

In witness whereof, l. ha ve hereinto set hand and seal at Indianapolis, lndiajfa, t Qlst day of l'ltoveinherI A. l). o1 e shoasand nine hundred and eight.

'IABRY A. M. ANIEL. [L s] Witnesses F. lV. l/Vo unina, L. VVoinixnn. 

